High-performance NO2 sensors based on chemically modified graphene.

Yuan, Wenjing; Liu, Anran; Huang, Liang; Li, Chun; Shi, Gaoquan · Adv Mater · 2013

basic_science · Level V

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Abstract

Covalently grafting reduced graphene oxide (rGO) sheets with sulfophenyl or ethylenediamine groups can produce chemically modified graphene (CMG) for fabricating high-performance gas sensors. The NO(2) sensors based on these CMGs exhibit sensitivities 4 to 16 times higher than that of a sensor based on rGO. They also show excellent selectivity and repeatability without the aid of UV-light or thermal treatment.

Medical subject headings